package main 

import (
	"fmt"
	"runtime"
	"os"
)

var (
	HOME = os.Getenv("HOME")
	USER = os.Getenv("USER")
	GOROOT = os.Getenv("GOROOT")
	GOPATH = os.Getenv("GOPATH")
)

func main(){
	var goos string = runtime.GOOS;
	fmt.Printf("The operating system is: %s\n", goos)
	path := os.Getenv("PATH")
	fmt.Printf("Path is %s\n",path)
	fmt.Printf("HOME is %s\n",HOME)
	fmt.Printf("USER is %s\n",USER)
	fmt.Printf("GOROOT is %s\n",GOROOT)
	fmt.Printf("GOPATH is %s\n",GOPATH)
}